Bailey–Borwein–Plouffe formula

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What Wikipedia says

The Bailey–Borwein–Plouffe formula (BBP formula) is a formula for π. It was discovered in 1995 by Simon Plouffe and is named after the authors of the article in which it was published, David H. Bailey, Peter Borwein, and Plouffe. The formula is:

Excerpt from the Wikipedia article “Bailey–Borwein–Plouffe formula”, under the CC BY-SA 4.0 license. Read the article on Wikipedia